Chapter 13, Problem 13.121P

(a)

Interpretation Introduction

Interpretation:

The density of brass that contains $10\text{}\text{atom }\%$ of $\text{Zn}$ is to be calculated.

Concept introduction:

The density of the substance is defined as the mass per unit volume. It is represented by $\rho$ and its unit is ${\text{kg/m}}^3$.

The formula to calculate the density of the substance is as follows:

$\rho =\frac{M}{V}$

The density of the mixture is defined as the weighted average of all its constituents.

(b)

Interpretation Introduction

Interpretation:

The density of brass that contains $38\text{atom }\%$ of $\text{Zn}$ is to be calculated.

Concept introduction:

The density of the substance is defined as the mass per unit volume. It is represented by $\rho$ and its unit is ${\text{kg/m}}^3$.

The formula to calculate the density of the substance is as follows:

$\rho =\frac{M}{V}$

The density of the mixture is defined as the weighted average of all its constituents.